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  • 1
    Publication Date: 2012-07-17
    Description: The Paisley Caves in Oregon record the oldest directly dated human remains (DNA) in the Western Hemisphere. More than 100 high-precision radiocarbon dates show that deposits containing artifacts and coprolites ranging in age from 12,450 to 2295 (14)C years ago are well stratified. Western Stemmed projectile points were recovered in deposits dated to 11,070 to 11,340 (14)C years ago, a time contemporaneous with or preceding the Clovis technology. There is no evidence of diagnostic Clovis technology at the site. These two distinct technologies were parallel developments, not the product of a unilinear technological evolution. "Blind testing" analysis of coprolites by an independent laboratory confirms the presence of human DNA in specimens of pre-Clovis age. The colonization of the Americas involved multiple technologically divergent, and possibly genetically divergent, founding groups.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jenkins, Dennis L -- Davis, Loren G -- Stafford, Thomas W Jr -- Campos, Paula F -- Hockett, Bryan -- Jones, George T -- Cummings, Linda Scott -- Yost, Chad -- Connolly, Thomas J -- Yohe, Robert M 2nd -- Gibbons, Summer C -- Raghavan, Maanasa -- Rasmussen, Morten -- Paijmans, Johanna L A -- Hofreiter, Michael -- Kemp, Brian M -- Barta, Jodi Lynn -- Monroe, Cara -- Gilbert, M Thomas P -- Willerslev, Eske -- New York, N.Y. -- Science. 2012 Jul 13;337(6091):223-8. doi: 10.1126/science.1218443.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Museum of Natural and Cultural History, University of Oregon, Eugene, OR 97403, USA. djenkins@uoregon.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22798611" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Archaeology ; *Caves ; DNA/analysis ; Emigration and Immigration/history ; Feces ; *Fossils ; History, Ancient ; Humans ; Molecular Sequence Data ; North America ; Oregon ; Population Dynamics ; Radiometric Dating ; Rodentia ; Technology/history ; Time
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2008-04-05
    Description: The timing of the first human migration into the Americas and its relation to the appearance of the Clovis technological complex in North America at about 11,000 to 10,800 radiocarbon years before the present (14C years B.P.) remains contentious. We establish that humans were present at Paisley 5 Mile Point Caves, in south-central Oregon, by 12,300 14C years B.P., through the recovery of human mitochondrial DNA (mtDNA) from coprolites, directly dated by accelerator mass spectrometry. The mtDNA corresponds to Native American founding haplogroups A2 and B2. The dates of the coprolites are 〉1000 14C years earlier than currently accepted dates for the Clovis complex.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gilbert, M Thomas P -- Jenkins, Dennis L -- Gotherstrom, Anders -- Naveran, Nuria -- Sanchez, Juan J -- Hofreiter, Michael -- Thomsen, Philip Francis -- Binladen, Jonas -- Higham, Thomas F G -- Yohe, Robert M 2nd -- Parr, Robert -- Cummings, Linda Scott -- Willerslev, Eske -- New York, N.Y. -- Science. 2008 May 9;320(5877):786-9. doi: 10.1126/science.1154116. Epub 2008 Apr 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Ancient Genetics, University of Copenhagen, Universitetsparken 15, 2100 Copenhagen, Denmark.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18388261" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Canidae/genetics ; *DNA, Mitochondrial ; *Emigration and Immigration ; *Feces ; *Fossils ; Humans ; Molecular Sequence Data ; North America ; Oregon ; Polymerase Chain Reaction ; Polymorphism, Single Nucleotide ; Sciuridae/genetics ; Sigmodontinae/genetics ; Time
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 2014-01-01
    Description: After creation of an arteriovenous fistula or placement of an arteriovenous graft, several weeks are required for maturation prior to first cannulation. Patients need an alternative way to receive hemodialysis during this time, frequently a catheter. After multiple failed access attempts, patients can run out of options and become catheter dependent. At our institution, we place HeRO grafts in eligible patients who have otherwise been told they would be catheter dependent for life. By combining the HeRO graft system with a Flixene graft, patients are able to remove catheters sooner or avoid placement as they can undergo cannulation for hemodialysis the next day. Utilizing this novel technique, twenty-one patients over a two-year period with various forms of central venous stenosis, catheter dependence, or failing existing arteriovenous access have been successfully converted to stable long term noncatheter based upper extremity access.
    Print ISSN: 2356-6140
    Electronic ISSN: 1537-744X
    Topics: Natural Sciences in General
    Published by Hindawi
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